tehran is also supplying the taliban with weapons. jennifer griffin is keeping an eye on that live at the pentagon. mounting evidence, jennifer, that iran is trying to move in just as the u.s. is pulling out of iraq and afghanistan. >> reporter: well, just take a look at what's happening in baghdad today, jon. you have the iranian vice president who's arriving with a high profile delegation to baghdad to meet with iraqi prime minister nor i al-maliki, a fellow shia muslim, they're trying to build relations, and listen to senators joe lieberman and lindsey graham, who just returned from afghanistan: >> the biggest nightmare for the ayatollahs in iran is to have a democrat -- democracy in iraq and afghanistan on their borders so yes, they're helping the taliban, they're trying to react to debate that shia are trying to bring down democracy, they're trying to undermine their efforts. they're responsible for material coming into both countries that are killing not only american soldiers but the rec -- iraqi and afghan people. >> they've g